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 <ul class="chunklist chunklist_book"><li><a href="history.html">PHP 及其相关工程的历史</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="history.php.html">PHP 的历史</a></li><li><a href="history.php.related.html">PHP 相关工程的历史</a></li><li><a href="history.php.books.html">PHP 相关书籍</a></li><li><a href="history.php.publications.html">PHP 相关文章</a></li></ul></li><li><a href="migration55.html">从 PHP 5.4.x 迁移到 PHP 5.5.x</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="migration55.changes.html">PHP 5.5.x 中的变更</a></li><li><a href="migration55.incompatible.html">不向后兼容的变更</a></li><li><a href="migration55.new-features.html">新的特性</a></li><li><a href="migration55.deprecated.html">PHP 5.5.x 中废弃的特性</a></li><li><a href="migration55.changed-functions.html">变更的函数</a></li><li><a href="migration55.new-functions.html">新的函数</a></li><li><a href="migration55.classes.html">新的类和接口</a></li><li><a href="migration55.new-methods.html">新的方法</a></li><li><a href="migration55.extensions-other.html">扩展中的其他变更</a></li><li><a href="migration55.global-constants.html">新的全局常量</a></li><li><a href="migration55.ini.html">INI 文件处理的变化</a></li><li><a href="migration55.internals.html">PHP 内部的变化</a></li></ul></li><li><a href="migration54.html">从 PHP 5.3.X 迁移到 PHP 5.4.X</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="migration54.changes.html">PHP 5.4.x 中的变更</a></li><li><a href="migration54.incompatible.html">不向后兼容的变更</a></li><li><a href="migration54.new-features.html">新特性</a></li><li><a href="migration54.sapi.html">SAPI 模块中的变化</a></li><li><a href="migration54.deprecated.html">在 PHP 5.4.x 中过时的特性</a></li><li><a href="migration54.parameters.html">变更的函数</a></li><li><a href="migration54.functions.html">新的函数</a></li><li><a href="migration54.classes.html">新的类和接口</a></li><li><a href="migration54.methods.html">新的方法</a></li><li><a href="migration54.removed-extensions.html">移除的扩展</a></li><li><a href="migration54.extensions-other.html">扩展中的其他变化</a></li><li><a href="migration54.global-constants.html">新的全局常量</a></li><li><a href="migration54.ini.html">INI 文件处理的变化</a></li><li><a href="migration54.other.html">其他变化</a></li></ul></li><li><a href="migration53.html">从 PHP 5.2.x 移植到 PHP 5.3.x</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="migration53.changes.html">PHP 5.3.x 的变化</a></li><li><a href="migration53.incompatible.html">不向下兼容的变化</a></li><li><a href="migration53.new-features.html">新特性</a></li><li><a href="migration53.windows.html">Windows 支持改变</a></li><li><a href="migration53.sapi.html">SAPI 模块的改变</a></li><li><a href="migration53.deprecated.html">PHP 5.3.x 中弃用的功能</a></li><li><a href="migration53.undeprecated.html">PHP 5.3.x 保留的功能</a></li><li><a href="migration53.parameters.html">新参数</a></li><li><a href="migration53.functions.html">新函数</a></li><li><a href="migration53.new-stream-wrappers.html">新的流包装器</a></li><li><a href="migration53.new-stream-filters.html">新的流过滤器</a></li><li><a href="migration53.class-constants.html">新增的类常量</a></li><li><a href="migration53.methods.html">新增的方法</a></li><li><a href="migration53.new-extensions.html">新的扩展</a></li><li><a href="migration53.removed-extensions.html">被移除的扩展</a></li><li><a href="migration53.extensions-other.html">Other changes to extensions</a></li><li><a href="migration53.classes.html">新类</a></li><li><a href="migration53.global-constants.html">新的全局常量</a></li><li><a href="migration53.ini.html">INI 文件处理改变</a></li><li><a href="migration53.other.html">其他改变</a></li></ul></li><li><a href="migration52.html">Migrating from PHP 5.1.x to PHP 5.2.x</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="migration52.changes.html">What has changed in PHP 5.2.x</a></li><li><a href="migration52.incompatible.html">Backward Incompatible Changes</a></li><li><a href="migration52.error-messages.html">New Error Messages</a></li><li><a href="migration52.datetime.html">Changes in PHP datetime
   support</a></li><li><a href="migration52.parameters.html">New Parameters</a></li><li><a href="migration52.functions.html">New Functions</a></li><li><a href="migration52.methods.html">New Methods</a></li><li><a href="migration52.removed-extensions.html">Removed Extensions</a></li><li><a href="migration52.new-extensions.html">New Extensions</a></li><li><a href="migration52.classes.html">New Classes</a></li><li><a href="migration52.global-constants.html">New Global Constants</a></li><li><a href="migration52.class-constants.html">New Class Constants</a></li><li><a href="migration52.newconf.html">New INI Configuration Directives</a></li><li><a href="migration52.errorrep.html">Error Reporting</a></li><li><a href="migration52.other.html">Other Enhancements</a></li></ul></li><li><a href="migration51.html">Migrating from PHP 5.0.x to PHP 5.1.x</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="migration51.changes.html">Key PHP 5.1.x features</a></li><li><a href="migration51.references.html">Changes in reference handling</a></li><li><a href="migration51.reading.html">Reading []</a></li><li><a href="migration51.integer-parameters.html">Integer values in function parameters</a></li><li><a href="migration51.oop.html">Class and object changes</a></li><li><a href="migration51.extensions.html">Extensions</a></li><li><a href="migration51.datetime.html">Date/time support</a></li><li><a href="migration51.databases.html">Changes in database support</a></li><li><a href="migration51.errorcheck.html">Checking for E_STRICT</a></li></ul></li><li><a href="migration5.html">从 PHP 4 移植到 PHP 5</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="migration5.changes.html">PHP 5 中有哪些改变</a></li><li><a href="migration5.incompatible.html">未向下兼容的改变</a></li><li><a href="migration5.cli-cgi.html">CLI 和 CGI</a></li><li><a href="migration5.configuration.html">移植配置文件</a></li><li><a href="migration5.functions.html">新函数</a></li><li><a href="migration5.newconf.html">新指令</a></li><li><a href="migration5.databases.html">数据库</a></li><li><a href="migration5.oop.html">新对象模型</a></li><li><a href="migrating5.errorrep.html">错误报告</a></li></ul></li><li><a href="oop4.html">类与对象（PHP 4）</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="keyword.class.html">类</a></li><li><a href="keyword.extends.html">继承</a></li><li><a href="oop4.constructor.html">构造函数</a></li><li><a href="keyword.paamayim-nekudotayim.html">范围解析操作符（::）</a></li><li><a href="keyword.parent.html">parent</a></li><li><a href="oop4.serialization.html">序列化对象 － 会话中的对象</a></li><li><a href="oop4.magic-functions.html">魔术函数 __sleep 和 __wakeup</a></li><li><a href="oop4.newref.html">构造函数中的引用</a></li><li><a href="oop4.object-comparison.html">对象的比较</a></li></ul></li><li><a href="debugger.html">PHP 的调试</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="debugger-about.html">关于调试器</a></li></ul></li><li><a href="configure.html">配置选项</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="configure.about.html">核心配置选项列表</a></li></ul></li><li><a href="ini.html">php.ini 配置</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="ini.list.html">php.ini 配置选项列表</a></li><li><a href="ini.sections.html">php.ini 配置段列表</a></li><li><a href="ini.core.html">php.ini 核心配置选项说明</a></li></ul></li><li><a href="extensions.html">扩展库列表／归类</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="extensions.alphabetical.html">按字母顺序</a></li><li><a href="extensions.membership.html">按归属分</a></li><li><a href="extensions.state.html">按状态分</a></li></ul></li><li><a href="aliases.html">函数别名列表</a></li><li><a href="reserved.html">保留字列表</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="reserved.keywords.html">关键词列表</a></li><li><a href="reserved.classes.html">预定义类</a></li><li><a href="reserved.constants.html">预定义常量</a></li></ul></li><li><a href="resource.html">资源类型列表</a></li><li><a href="filters.html">可用过滤器列表</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="filters.string.html">字符串过滤器</a></li><li><a href="filters.convert.html">转换过滤器</a></li><li><a href="filters.compression.html">压缩过滤器</a></li><li><a href="filters.encryption.html">加密过滤器</a></li></ul></li><li><a href="transports.html">所支持的套接字传输器（Socket Transports）列表</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="transports.inet.html">Internet 领域：TCP，UDP，SSL 和 TLS</a></li><li><a href="transports.unix.html">Unix 领域：Unix 和 UDG</a></li></ul></li><li><a href="types.comparisons.html">PHP 类型比较表</a></li><li><a href="tokens.html">解析器代号列表</a></li><li><a href="userlandnaming.html">用户空间命名指南</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="userlandnaming.globalnamespace.html">全局命名空间</a></li><li><a href="userlandnaming.rules.html">规则</a></li><li><a href="userlandnaming.tips.html">提示</a></li></ul></li><li><a href="about.html">关于本手册</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="about.formats.html">手册的格式</a></li><li><a href="about.notes.html">关于用户注释</a></li><li><a href="about.prototypes.html">如何阅读函数的定义（函数原型）</a></li><li><a href="about.phpversions.html">本手册中所涉及的 PHP 版本</a></li><li><a href="about.more.html">如何得到关于 PHP 更多的信息</a></li><li><a href="about.howtohelp.html">如何帮助改进本文档</a></li><li><a href="about.generate.html">如何生成手册的各种格式</a></li><li><a href="about.translations.html">手册译文</a></li></ul></li><li><a href="cc.license.html">Creative Commons Attribution 3.0</a></li><li><a href="indexes.html">索引</a><ul class="chunklist chunklist_book chunklist_children"><li><a href="indexes.functions.html">函数和方法列表</a></li><li><a href="indexes.examples.html">示例列表</a></li></ul></li><li><a href="doc.changelog.html">更新日志</a></li></ul></div><hr /><div class="manualnavbar" style="text-align: center;">
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